South Gate: 8 am - 10 pm
Hanguang Gate: 8 am - 5:30 pm
All other gates:
May - Oct: 8 am - 7 pm
Nov - Apr: 8 am - 6 pm
General admission: CNY 54
Children 3.9 - 4.6 feet (1.2 - 1.4 meters) in height: CNY 27
Children under 3.9 feet: free
Wikipedia https://zh.wikipedia.org/wiki/西安城墙
Information at Travel China Guide http://www.travelchinaguide.com/attraction/shaanxi/xian/citywall.htm
地址 Xian, China
坐标 34°15'12.352" N 108°56'32.493" E